From 4a56e2c2cc3d78f12f1788c27669a651071dee49 Mon Sep 17 00:00:00 2001
From: "Fajar A. Nugraha" <list@fajar.net>
Date: Fri, 27 Mar 2015 14:57:28 +0100
Subject: [PATCH] grub-extras/lua: add fs label to grub.enum_device

---
 lua/grub_lib.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/lua/grub_lib.c b/lua/grub_lib.c
index 7798a20..3d25d02 100644
--- a/lua/grub_lib.c
+++ b/lua/grub_lib.c
@@ -183,7 +183,34 @@ grub_lua_enum_device_iter (const char *name, void *data)
 		}
 	    }
 
-	  lua_call (state, 3, 1);
+	  if (! fs->label)
+	    lua_pushnil (state);
+	  else
+	    {
+	      int err;
+	      char *label = NULL;
+
+	      err = fs->label (dev, &label);
+	      if (err)
+		{
+		  grub_errno = 0;
+		  lua_pushnil (state);
+		}
+	      else
+		{
+		  if (label == NULL)
+		    {
+		      lua_pushnil (state);
+		    }
+		  else
+		    {
+		      lua_pushstring (state, label);
+		    }
+		  grub_free (label);
+		}
+	    }
+
+	  lua_call (state, 4, 1);
 	  result = lua_tointeger (state, -1);
 	  lua_pop (state, 1);
 	}
-- 
2.11.4.GIT